Description: Features: brand new and high quality High accuracy, 2 decimal point output, 0.01V, 0.01mA. 4 digits brighter LED display, two decimal points accuracy, output can be calibrated. Support external 15-30V operating power supply, 5V micro USB port, and Built-in lithium battery Have rough and fine adjusting modes, the rotation turns is settable. Have one switching button to switch between current and voltage output. Current and voltage output simultaneously, output wiring terminals are independently. Have 2-wire, 3-wire, 4-wire current outputs.(Support active and passive) Multiple output range: 0-3.3V, 0-5V, 1-5V, 4-20mA,0-20mA, etc. Output range is settable and programmable. Programmable multiple display mode: current voltage value display, 0- display, 0-50.0Hz display. Output terminals have short-circut for protection, power supply terminals have polarity reverse connection for protection. Infinite rotation knob, high accuracy long life span encorder to adjust output. Mush more stable and accurate than the potentiometer type. Small size comfortable external shape: alloy adjustable knob, elegant external for case, easy to carry. Pluggable wiring terminal blocks, very convenient to do wire connection. Technical Indicators 1 External Power Supply:DC15-30V 1W(Non charge)/5W(Charging); 2 3.7V Lithium Battery Capacity 1000mAh,Maximum Charge Current 0.8A (Selection Configuration); 3 External Connection microUSB- 5V :0.2A(Non charge)/1A(Charging); 4 Adjustable Voltage Output 0-10V, Precision 0.01V,Can Be Calibrated; Maximum Output Current 100mA, Short Circuit for Protection; 5 Adjustable Current Output 0-22mA,Precision 0.01mA,Can Be Calibrated; Sampling Resistor 10-500Ω,Can Be Short; 6 Digital Display Digit 4 Digit, Two Decimal; 7 Encoder Knob Rotate One Circle Has 20 pulses; Specification: Material: Plastic, Alloy Dimensions: 100x60x25mm(3.94x2.36x0.98in)(approx) Color: As pictures shown. Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! We can provide a detailed PDF version of the English manual. Please contact us for more information. Package includes: 1 x Signal Generator(other accessories demo in the picture is not included.)